Datasheet TDA1596 Specification

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Page 1

INTEGRATED CIRCUITS

DATA SH EET

TDA1596

IF amplifier/demodulator for FM radio receivers

Product speciﬁcation File under Integrated Circuits, IC01

April 1991

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Philips Semiconductors Product speciﬁcation

IF ampliﬁer/demodulator for

TDA1596

FM radio receivers

GENERAL DESCRIPTION

The TDA1596 provides IF amplification, symmetrical quadrature demodulation and level detection for quality home and car FM radio receivers and is suitable for both mono and stereo reception. It may also be applied to common front-ends, stereo decoders and AM receiver circuits.

Features

• Simulates behaviour of a ratio detector (internal field strength and detuning-dependent voltage for dynamic AF signal muting)

• Mono/stereo blend and field strength indication control voltage

• Three-state mode switch for FM, mute-on / FM, mute-off / FM-off

• Internal compensation of AF signal total harmonic distortion (THD)

• Two open collector stop pulse outputs for microcomputer tuning control (can be one stop pulse output by

wired-ANDing)

• Internal reference voltage source

• Built-in hum and ripple rejection circuits

QUICK REFERENCE DATA

PARAMETER CONDITIONS SYMBOL MIN. TYP. MAX. UNIT

Supply voltage (pin 1) V Supply current (pin 1) V

= 8.5 V;

= I7 = 0 mA I

AF output voltage

(RMS value) V

Signal-to-noise ratio V

= 10 mV V

18(rms)

= 10 mV;

18(rms)

= 400 Hz;

∆f = 75 kHz S/N − 82 − dB

Total harmonic distortion V

= 10 mV;

18(rms)

= 1 kHz; I7 = 0 mA;

∆f = 75 kHz; FM mute on; without de-emphasis; without detuning THD − 0.1 0.3 %

Operating ambient

temperature range T

SEE ALSO DATA SHEET FOR TDA1596T

PACKAGE OUTLINE

4(rms)

amb

7.5 8.5 12.0 V

− 20 26 mA

180 200 220 mV

−40 −+85 °C

18-lead DIL; plastic (SOT102); SOT102-1; 1996 August 06.

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Philips Semiconductors Product speciﬁcation

IF ampliﬁer/demodulator for FM radio receivers

TDA1596

April 1991 3

Fig.1 Block diagram and application circuit.

pin 3 can be adjusted for minimum 2nd harmonic distortion at pin 4.

(1) Connecting pin 11 to ground is only allowed for measuring the current at pin 14. It is not for use in application.

(2) In the FM, mute-on condition the unweighted level detector output is available from pin 3. In the FM, mute-off condition the variable resistor at

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Philips Semiconductors Product speciﬁcation

IF ampliﬁer/demodulator for FM radio receivers

PINNING

Fig.2 Pinning diagram.

TDA1596

1VPsupply voltage 2 LVA level voltage adjustment 3 ULV unweighted level output/K2 adjustment 4 AFO AF output 5V 6 WLV weighted level voltage output 7 MSW mode switch 8 DDV detune detector voltage

9 DMI1 demodulator input 1 10 DMI2 demodulator input 2 11 TSW tau switch 12 ST1 stop pulse output 1 13 ST0 stop pulse output 0 14 MTV mute voltage 15 GND ground 16 LFD1 IF limiter feedback 1 17 LFD2 IF limiter feedback 2 18 IFI IF input

reference voltage output

ref

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Philips Semiconductors Product speciﬁcation

IF ampliﬁer/demodulator for

TDA1596

FM radio receivers

FUNCTIONAL DESCRIPTION Limiter-ampliﬁer

This has five stages of IF amplification using balanced differential limiter-amplifiers with emitter-follower coupling. Decoupling of the stages from the voltage supply lines and an internal high-ohmic DC feed-back loop give a very stable IF performance. The amplifier gain is virtually independent from temperature changes.

FM demodulator

The demodulator is fully balanced and comprises two cross-coupled differential amplifiers. Quadrature detection of the FM signal is performed by feeding one differential amplifier directly from the limiter-amplifier output, and the other via an external 90° phase-shifting network. The demodulator has good stability and its zero cross-over shift is small. The bandwidth of the demodulator output is restricted to approximately 1 MHz by an internal low-pass filter.

THD compensation

This circuit compensates non-linearities introduced by demodulation. For this to operate correctly the demodulator circuit between pins 9 and 10 must have a loaded Q-factor of 19. Consequently there is no need for the demodulator tuned circuit to be adjusted for minimum THD, instead the adjustment criterium is for a symmetrical stop pulse.

Mute attenuator and AF output

The control voltage for the mute attenuator at pin 14 is generated from the values of the level detector and the detuning detector outputs. The mute attenuator has a fast attack and a slow decay which is determined by the capacitor at pin 14. The AF signal is passed via the mute attenuator to the output at pin 4.

A weighted control voltage, available from pin 6, is obtained from the mute attenuator control voltage via a buffer-amplifier which introduces an additional voltage shift and gain.

Level detector

The level detector generates a voltage output which is proportional to the field strength of the input signal. The unweighted level detector output is available when the mode switch is operating in the FM, mute-on condition.

Tuning-stop outputs

The open collector outputs STOP-0 and STOP-1 (from pins 13 and 12 respectively) are voltages derived from the detuning level and the field strength of the input signal. If only one tuning-stop output is required, pins 12 and 13 may be tied together.

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Philips Semiconductors Product speciﬁcation

IF ampliﬁer/demodulator for FM radio receivers

RATINGS

Limiting values in accordance with the Absolute Maximum System (IEC 134)

PARAMETER SYMBOL MIN. MAX. UNIT

Supply voltage (pin 1) V Reference voltage range (pin 5) V Level adjustment range (pin 2) V Mode switch voltage range (pin 7) V Control input voltage range (pin 11) V THD compensation/unweighted ﬁeld

strength voltage range (pin 3) V

Tuning-stop output voltage range

STOP-0 (pin 13) V STOP-1 (pin 12) V

Tuning-stop output current

STOP-0 (pin 13) I

STOP-1 (pin 12) I Storage temperature range T Operating ambient temperature range T Electrostatic handling

all pins except pins 5 and 6 V

pin 5 V

pin 6 V

P 5-15 2-15 7-15 11-15

3-15

13-15 12-15

13 12

stg amb

es es es

= V

1-15

−0.3 + 16 V

−0.3 + 10 V

−0.3 + 16 V

−0.3 + 6V

−0.3 + 16 V

− 2mA

−55 + 150 °C

−40 + 85 °C

−2000 +2000 V

−2000 +900 V

−2000 +1600 V

TDA1596

Equivalent to discharging a 100 pF capacitor through a 1.5 kΩ series resistor.

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Philips Semiconductors Product speciﬁcation

IF ampliﬁer/demodulator for

TDA1596

FM radio receivers

CHARACTERISTICS

f = 10.7 MHz; V

= V

pins 9, 10 aligned for symmetrical stop pulses; all voltages are referred to ground (pin 15); unless otherwise speciﬁed

PARAMETER SYMBOL MIN. TYP. MAX. UNIT

Supplies

Supply voltage V Supply current at I

FM demodulator

Input impedance R

DC output voltage (no-signal

condition) at

9, 10(p-p)

18(rms)

≤ 100 µV;

≤ 5 µVV

Output impedance R

Mute attenuator control voltage

Control voltage (pin 14)

at V

≤ 5 µVV

18(rms)

= 1 mV V

18(rms)

Output impedance (pin 14) R Level shift input (pin 2)

internal bias voltage at I

input impedance R

Internal muting (Fig.4)

Internal attenuation of signals

± 22.5 kHz ≤ detuning ≤ ± 80 kHz

A = 20log[∆V

at V

≥ 1 V

= 0.77 V = 0.55 V

Attack and decay (pin 14)

Pin 11 connected to ground

charge current + I

discharge current −I Pin 11 connected to V

charge current + I

discharge current −I

= 8.5 V; VI = V

1-15

= I7 = 0 mA I

= 0 mA V

18(rms)

(FM mute-off)/∆V4(FM)]

5 5

ref

= 1 mV; T

= V

9-10

4 4-15

14 14 14-15

2 2-15

= 25 °C; measured in the circuit of Fig.3; tuned circuit at

amb

7.5 8.5 12.0 V

− 20 26 mA

25 40 55 kΩ

− 6 − pF

2.75 3.10 3.45 V

− 400 −Ω

− 2.0 − V

− 3.45 − V

−−2.0 MΩ

− 1.4 − V

15 −−kΩ

A − 0 − dB A 1.5 3.0 4.5 dB A − 20 − dB

− 8 −µA

− 120 −µA

− 100 −µA

− 120 −µA

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Philips Semiconductors Product speciﬁcation

IF ampliﬁer/demodulator for FM radio receivers

PARAMETER SYMBOL MIN. TYP. MAX. UNIT

Level detector

Dependence of output voltage

on temperature

Output impedance R Dependence of output voltage (pin 6)

on input voltage (pin 18) (Fig.5):

V Slope of output voltage (pin 6)

for input voltage range

V Dependence of output voltage (pin 6)

on detuning (Fig.6) at input

voltage V

detuning ≤ ± 45 kHz ∆V

detuning = for V

detuning = ± 200 kHz V Slope of output voltage with

detuning = 125 ± 20 kHz at

V Level shift control (pin 2) (Fig.7)

adjustment range ± ∆V

adjustment gain −(∆V

output voltage at V

Low-pass ﬁlter at pin 8

Output voltage at I

V Internal resistance R

≤ 5 µV; I2 = I7 = 0 mA V

18(rms)

= 1 mV; I2 = I7= 0 mA V

18(rms)

≥ 50 µV to

18(rms)

≤ 50 mV

18(rms)

= 10 mV:

18(rms)

= 1.8 V ±∆f90−160 kHz

= 10 mV |∆V6/∆f| − 35 − mV/kHz

18(rms)

= V

≤ 5 µVV

18(rms)

= 0 mA;

≤ 5 µVV

18(rms)

∆V

-------------- V6∆T

6 6

∆ V

---------------------------- 20∆ V

log

/∆V2) − 1.7 − V

8 8(int)

− 3.3 − mV/VK

−−500 Ω

0.1 0.7 1.3 V

3.0 3.6 4.2 V

1.4 1.7 2.0 V/20 dB

−−0.2 V

0.5 0.7 0.9 V

1.6 2.0 − V

−−0.3 V

−2.2 − V

12 25 50 kΩ

TDA1596

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Philips Semiconductors Product speciﬁcation

IF ampliﬁer/demodulator for FM radio receivers

PARAMETER SYMBOL MIN. TYP. MAX. UNIT

Tuning-stop detector (Figs 8 and 9)

Stop-0: detuning at V

for V

≥ 3.5 V + ∆f −−10 kHz

≤ 0.3 V + ∆f18−−kHz

Stop-1: detuning at V

for V

≥ 3.5 V −∆f −−10 kHz

≤ 0.3 V −∆f18−−kHz

Dependence of STOP-0, STOP-1 on

input voltage (pin 18)

input voltage (RMS value) for

= V13 ≥ 3.5 V V

input voltage (RMS value) for

= V13 ≤ 0.3 V V

Output voltage when

= I13 = 1 mA V

Mode switch and pin 3 (Fig.10)

18(rms)

= 10 mV

18(rms)

12, 13

TDA1596

250 −−µV

−−50 µV

−−0.3 V

FM-off position

Control voltage for 60 dB

muting depth V

−−1.4 V

FM, mute-on position (pin 3 = output)

Internal bias voltage at

≥ 10 MΩ V

7-15

Input current |I

| −−2.5 µA

− 2.8 − V

Output voltage with

= 10 kΩ; C

3-15

Output impedance for V

= 500 µAR

≥ 1 nF

= ≤ 5 µV;

3-15

− 2 − V

−−100 Ω

FM, mute-off position (pin 3 = input)

Control voltage V Input current at V

= V

Input resistance R

3-15

0.9 V

−−V

−−15 µA 1 −−MΩ

Reference voltage source

Output voltage at I Output impedance at I

= −1 mA V

= −1 mA ∆V5/∆I

3.3 3.7 4.1 V

− 40 80 Ω

Temperature coefﬁcient TC − 3.3 − mV/K

* Connecting pin 11 to ground is only allowed for measuring the current at pin 14. It is not for use in application. ** Without input voltage.

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Philips Semiconductors Product speciﬁcation

IF ampliﬁer/demodulator for FM radio receivers

OPERATING CHARACTERISTICS

f = 10.7 MHz; V (pin 4) = 50 µs; test circuit as per Fig.3; tuned circuit (Q unless otherwise speciﬁed

AF output voltage (RMS value)

at V

= 10 mV V

18(rms)

Start of limiting (FM, mute-off);

(RMS value) (Fig.11) V Dependence of signal-to-noise ratio

(in noise frequency band 250 Hz to

15 kHz, unweighted) on input voltage

for S/N = 26 dB V

for S/N = 46 dB V

at V

= 10 mV; ∆f = 75 kHz S/N − 82 − dB

18(rms)

THD (FM, mute-on) at V

∆f = 75 kHz; f

detuning; without de-emphasis;

= 0 mA THD − 0.1 0.3 %

Dynamic mute attenuation (Fig.12)

αD20

with f

----------------------------------------------------- -log= V

= 100 kHz; ∆f = 75 kHz α

Slope of attenuation curve α THD (FM, mute-on) at V

∆f = 75 kHz; f

detuning ≤ ± 25 kHz without

de-emphasis; I THD (FM, mute-off and compensated via

pin 3) at V

18(rms)

∆f = 75 kHz; f

= V

Voltage range at pin 3 for THD

compensation V AM suppression (FM, mute-off) with

amplitude modulation at 30%;

input voltage range V

to 100 mV (Fig.14) − 65 − dB Power supply ripple rejection

= 20log [∆V

Mute attenuation (FM-off)

= 20log [V

4(FM-on/V4(FM-off)

= 1 mV; deviation (∆f) = 22.5 kHz; modulation frequency (fm) = 400 Hz; de-emphasis

18(rms)

= 19) aligned for symmetrical stop pulses; T

amb

PARAMETER SYMBOL MIN. TYP. MAX. UNIT

4(rms)

18(rms)

18(rms) 18(rms)

= 10 mV;

18(rms)

= 1 kHz; without

FMmute off–()

FM mute, on–()

∆f − 0.8 − dB/kHz

= 10 mV;

18(rms)

= 1 kHz;

= 0 mA (Fig.13) THD −−0.6 %

180 200 220 mV

14 22 35 µV

− 15 −µV

− 60 −µV

− 16 − dB

= 10 mV;

= 1 kHz;

THD − 0.07 0.25 %

0 − V

= 300 µV

/∆V4]3336−dB

]60−−dB

TDA1596

= +25 °C;

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Philips Semiconductors Product speciﬁcation

IF ampliﬁer/demodulator for FM radio receivers

TDA1596

Fig.3 Test circuit.

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Philips Semiconductors Product speciﬁcation

IF ampliﬁer/demodulator for FM radio receivers

TDA1596

Fig.4 Typical curve of internal attenuation showing the relationship between the mute

attenuator control voltage (pin 14) and mute attenuation, I2 = I7 = 0 mA.

Fig.5 Weighted field strength output voltage (pin 6) as a function of input voltage (pin 18);

≥ 10 kΩ; I2= I7= 0 mA.

6-15

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Philips Semiconductors Product speciﬁcation

IF ampliﬁer/demodulator for FM radio receivers

TDA1596

Fig.6 Weighted field strength output voltage (pin 6) as a function of detuning;

≥ 10 kΩ; I2 = I7 = 0 mA; V18 = 10 mV.

6-15

Fig.7 Adjustment range of weighted field strength output voltage (pin 6) with level shift control (pin 2);

≥ 10 kΩ; I7 = 0 mA.

6-15

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Philips Semiconductors Product speciﬁcation

IF ampliﬁer/demodulator for FM radio receivers

TDA1596

(a) STOP-0.

(b) STOP-1

Fig.8 STOP-0 and STOP-1 output voltages as a function of detuning, measured at V18 = 10 mV.

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Philips Semiconductors Product speciﬁcation

IF ampliﬁer/demodulator for FM radio receivers

TDA1596

Fig.9 STOP-0 or STOP-1 output voltages as a function of input voltage at pin 18.

Fig.10 Switch levels at pin 7.

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Philips Semiconductors Product speciﬁcation

IF ampliﬁer/demodulator for FM radio receivers

TDA1596

(a) mode switch at FM, mute-on

(b) mode switch at FM, mute-off

Fig.11 Audio signal (∆f = 22.5 kHz; fm = 1 kHz) and noise as functions of input voltage at pin 18;

measured with 50 µs de-emphasis.

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Philips Semiconductors Product speciﬁcation

IF ampliﬁer/demodulator for FM radio receivers

TDA1596

Fig.12 Dynamic mute attenuation as a function of frequency deviation for

modulation frequencies of 40, 60, 80 and 100 kHz.

Fig.13 THD as a function of detuning; mode switch at FM, mute-on position;

∆f = 75 kHz; fm= 1 kHz; V

18(rms)

= 10 mV.

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Philips Semiconductors Product speciﬁcation

IF ampliﬁer/demodulator for FM radio receivers

TDA1596

(a) mode switch at FM, mute-on.

(b) mode switch at FM, mute-off

Fig.14 Typical curves showing AM suppression for an input signal having frequency modulation at

∆f = 22.5 kHz and fm = 1 kHz, and amplitude modulation of 30% at a frequency of 400 Hz; de-emphasis time = 50 µs and bandwidth = 250 Hz to 15 kHz.

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Philips Semiconductors Product speciﬁcation

IF ampliﬁer/demodulator for FM radio receivers

PACKAGE OUTLINE

DIP18: plastic dual in-line package; 18 leads (300 mil)

seating plane

TDA1596

SOT102-1

w M

(e )

pin 1 index

0 5 10 mm

scale

DIMENSIONS (inch dimensions are derived from the original mm dimensions)

UNIT

max.

inches

Note

1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.

OUTLINE VERSION

SOT102-1

min.

max.

IEC JEDEC EIAJ

1.40

1.14

0.055

0.044

0.53

0.38

0.021

0.015

0.32

1.40

0.23

1.14

0.013

0.055

0.009

0.044

REFERENCES

(1) (1)

cD E e M

21.8

21.4

0.86

0.84

6.48

6.20

0.26

0.24

(1)

3.9

8.25

3.4

7.80

0.15

0.32

0.13

0.31

EUROPEAN

PROJECTION

9.5

8.3

0.37

0.33

0.2542.54 7.62

0.010.10 0.30

ISSUE DATE

93-10-14 95-01-23

max.

0.854.7 0.51 3.7

0.0330.19 0.020 0.15

April 1991 19

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Philips Semiconductors Product speciﬁcation

IF ampliﬁer/demodulator for FM radio receivers

SOLDERING Introduction

There is no soldering method that is ideal for all IC packages. Wave soldering is often preferred when through-hole and surface mounted components are mixed on one printed-circuit board. However, wave soldering is not always suitable for surface mounted ICs, or for printed-circuits with high population densities. In these situations reflow soldering is often used.

This text gives a very brief insight to a complex technology. A more in-depth account of soldering ICs can be found in

“IC Package Databook”

our

Soldering by dipping or by wave

The maximum permissible temperature of the solder is 260 °C; solder at this temperature must not be in contact with the joint for more than 5 seconds. The total contact time of successive solder waves must not exceed 5 seconds.

(order code 9398 652 90011).

TDA1596

The device may be mounted up to the seating plane, but the temperature of the plastic body must not exceed the specified maximum storage temperature (T printed-circuit board has been pre-heated, forced cooling may be necessary immediately after soldering to keep the temperature within the permissible limit.

Repairing soldered joints

Apply a low voltage soldering iron (less than 24 V) to the lead(s) of the package, below the seating plane or not more than 2 mm above it. If the temperature of the soldering iron bit is less than 300 °C it may remain in contact for up to 10 seconds. If the bit temperature is between 300 and 400 °C, contact may be up to 5 seconds.

stg max

). If the

DEFINITIONS

Data sheet status

Objective speciﬁcation This data sheet contains target or goal speciﬁcations for product development. Preliminary speciﬁcation This data sheet contains preliminary data; supplementary data may be published later. Product speciﬁcation This data sheet contains ﬁnal product speciﬁcations.

Limiting values

Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation of the device at these or at any other conditions above those given in the Characteristics sections of the speciﬁcation is not implied. Exposure to limiting values for extended periods may affect device reliability.

Application information

Where application information is given, it is advisory and does not form part of the speciﬁcation.

LIFE SUPPORT APPLICATIONS

These products are not designed for use in life support appliances, devices, or systems where malfunction of these products can reasonably be expected to result in personal injury. Philips customers using or selling these products for use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such improper use or sale.

April 1991 20